20194584992 has 12 divisors (see below), whose sum is σ = 39758089266. Its totient is φ = 10097292480.

The previous prime is 20194584989. The next prime is 20194585001. The reversal of 20194584992 is 29948549102.

It can be written as a sum of positive squares in only one way, i.e., 18735039376 + 1459545616 = 136876^2 + 38204^2 .

It is a super-2 number, since 2×20194584992² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315540359 + ... + 315540422.

Almost surely, 2^20194584992 is an apocalyptic number.

It is an amenable number.

20194584992 is a deficient number, since it is larger than the sum of its proper divisors (19563504274).

20194584992 is an equidigital number, since it uses as much as digits as its factorization.

20194584992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631080791 (or 631080783 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 20194584992 in words is "twenty billion, one hundred ninety-four million, five hundred eighty-four thousand, nine hundred ninety-two".